ILLUMINA, INC.

As of June 28, 2026, we haveone reportable segment. Segment information is consistent with how our Chief Operating Decision Maker (CODM), who is our Chief Executive Officer, reviews financial information, makes operating decisions, allocates resources, and assesses performance. We also consider the way budgets and forecasts are prepared and reviewed and the basis on which executive compensation is determined. Our CODM allocates resources and evaluates business performance based on consolidated revenue and net income. Net income is used in the annual budgeting and monthly forecasting processes and to monitor and assess budgeted/forecasted versus actual results. Our CODM does not evaluate segments using asset information.

The following table presents selected financial information with respect to segment profit for the periods presented:

MANAGEMENT’S DISCUSSION & ANALYSIS

Our Management’s Discussion and Analysis (MD&A) is designed to help readers understand our results of operations, financial condition, and cash flow. It is provided in addition to the accompanying condensed consolidated financial statements and notes. This MD&A is organized as follows:

•Management’s Overview and Outlook. High-level discussion of our operating results and significant known trends that affect our business.

•Results of Operations. Discussion of our revenues and expenses.

•Liquidity and Capital Resources. Discussion of key aspects of our condensed consolidated statements of cash flows, changes in our financial position, and our financial commitments.

•Critical Accounting Policies and Estimates. Discussion of significant changes since our most recent Annual Report on Form 10-K that we believe are important to understanding the assumptions and judgments underlying our condensed consolidated financial statements.

•Recent Accounting Pronouncements. Summary of recent accounting pronouncements applicable to our condensed consolidated financial statements.

•Quantitative and Qualitative Disclosures About Market Risk. Discussion of our financial instruments’ exposure to market risk.

Our discussion of our results of operations, financial condition, and cash flows for Q2 2025 and YTD 2025 can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” within our filing of Form 10-Q for the fiscal quarter ended June 29, 2025.

This MD&A discussion contains forward-looking statements that involve risks and uncertainties. See Consideration Regarding Forward-Looking Statements preceding the Condensed Consolidated Financial Statements section of this report for additional factors relating to such statements. This MD&A should be read in conjunction with our condensed consolidated financial statements and accompanying notes included in this report and our Annual Report on Form 10-K for the fiscal year ended December 28, 2025. Operating results are not necessarily indicative of results that may occur in future periods.